Sauces and condiments

The only cooks in the civilized world are French cooks. . . . Other nations understand food in general; the French alone understand cooking, because all their qualities - promptitude, decision, tact - are employed in the art. No foreigner can make a good white sauce. Roqueplan, La Vie parisienne (1853)

France is the undisputed world champion when it comes to sauces.
‘Sauces are the splendor and the glory of French cooking’ as Julia Child says. The Larousse Gastronomique lists pages and pages of them, including endless variations on the famous Five Mother Sauces of French Cuisine, plus all the ‘orphans’.

I’ve included the ones you’re most likely to encounter or else this app would be twice as long! Everyone I know agrees on one thing: since French sauces are so good, why are restaurant chefs often so stingy with them? Why is there only a thin little zigzag or three arty drops of a delicious something on the side of dish so small you can barely taste it? Why?